Upper plate of a food slicer



FIG. 1 is a front, left side and top perspective view of the upper plate of a food slicer, showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a front elevational view thereof; and,

FIG. 7 is a rear elevational view thereof. 

The ornamental design for an upper plate of a food slicer, as shown and described. 